Supercell over Laramie
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Wyoming Snow Precipitation Update

United States Natural Resources Water and Climate Center Department of Conservation Portland, Oregon Agriculture Service S N O W - P R E C I P I T A T I O N U P D A T E Based on Mountain Data from NRCS SNOTEL Sites As of WEDNESDAY: OCTOBER 19 , 2016 ------------------------------------------------------------------------------ BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Median Median Current Average Avg ------------------------------------------------------------------------------ WYOMING SNAKE RIVER Base Camp 7030 .9 .0 * 5.0 1.1 455 Black Bear 8170 1.8 1.4 129* 6.5 2.1 310 Blind Bull Sum 8650 2.4 .4 600* 4.0 1.2 333 Cottonwood Creek 7670 -M .0 * -M 1.5 * East Rim Divide 7930 .8 .0 * 2.9 .8 362 Grand Targhee 9260 8.1 2.7 300* 9.2 3.4 271 Granite Creek 6770 .7 .0 * 4.3 1.0 430 Grassy Lake 7265 1.5 .0 * 7.9 1.9 416 Gros Ventre Summit 8750 .7 .8 88* 3.4 1.0 340 Gunsight Pass 9820 1.2 .4 300* 4.1 1.3 315 Lewis Lake Divide 7850 1.8 .0 * 6.7 1.7 394 Phillips Bench 8200 1.2 .0 * 6.1 1.3 469 Salt River Summit 7760 1.3 .0 * 3.9 1.0 390 Snake River Station 6920 .8 .0 * 5.4 1.5 360 Spring Creek Divide 9000 2.5 .4 625* 5.3 1.2 442 Thumb Divide 7980 .9 .0 * 4.3 1.3 331 Togwotee Pass 9580 2.6 1.6 162* 4.5 1.5 300 Two Ocean Plateau 9240 5.0 1.8 278* -M 1.7 * Willow Creek 8380 2.1 .0 * 7.2 2.0 360 Younts Peak 8350 -M .5 * -M 1.3 * ----- ----- Basin Index (%) 382* 358 MADISON-GALLATIN Black Bear 8170 1.8 1.4 129* 6.5 2.1 310 Canyon 7870 .7 .2 350* 3.5 1.2 292 Madison Plateau 7750 1.0 .5 200* 5.7 1.5 380 West Yellowstone 6700 .0 .0 * 3.6 1.1 327 Whiskey Creek 6800 .3 .0 * 3.5 1.3 269 ----- ----- Basin Index (%) 181* 317 YELLOWSTONE Beartooth Lake 9360 1.5 1.5 100* 2.4 1.3 185 Burnt Mtn 5880 .0 .0 * 2.0 2.5 80 Canyon 7870 .7 .2 350* 3.5 1.2 292 Cole Creek 7850 .0 1.5 0* 1.5 2.2 68 Evening Star 9200 3.6 1.1 327* 6.7 1.9 353 Fisher Creek 9100 2.7 1.4 193* 5.4 2.0 270 Northeast Entrance 7350 .0 .0 * 2.9 1.1 264 Parker Peak 9400 3.3 1.4 236* 5.3 1.7 312 Sylvan Lake 8420 2.9 .7 414* 8.0 1.9 421 Thumb Divide 7980 .9 .0 * 4.3 1.3 331 Two Ocean Plateau 9240 5.0 1.8 278* -M 1.7 * White Mill 8700 2.0 1.1 182* 3.2 1.7 188 Wolverine 7650 .7 .0 * 3.2 1.2 267 ----- ----- Basin Index (%) 218* 242 WIND RIVER Burroughs Creek 8750 .0 -M * 1.8 -M * Castle Creek 8400 .0 -M * 1.5 -M * Cold Springs 9630 .6 .0 * 1.6 1.1 145 Deer Park 9700 1.2 .8 150* 2.6 1.7 153 Hobbs Park 10100 1.9 .9 211* 2.5 1.4 179 Kirwin 9550 .8 .8 100* 1.9 1.2 158 Little Warm 9370 .7 .4 175* 2.8 1.2 233 Owl Creek 8975 .0 .2 0* 1.0 .8 125 South Pass 9040 .8 .1 800* 1.8 1.2 150 St. Lawrence Alt 8620 .2 .0 * 1.9 1.1 173 Togwotee Pass 9580 2.6 1.6 162* 4.5 1.5 300 Townsend Creek 8700 .8 .0 * 1.8 1.4 129 ----- ----- Basin Index (%) 200* 178 BIGHORN BASIN Bald Mtn. 9380 2.6 2.0 130* 1.9 1.8 106 Bear Trap Meadow 8200 .3 .2 150* 1.5 1.1 136 Bone Springs Div 9350 1.1 1.5 73* 2.0 1.7 118 Grave Springs 8550 .5 .2 250* 1.6 1.5 107 Kirwin 9550 .8 .8 100* 1.9 1.2 158 Marquette 8760 .3 -M * 1.6 -M * Middle Powder 7760 .0 .4 0* 1.3 1.6 81 Owl Creek 8975 .0 .2 0* 1.0 .8 125 Powder River Pass 9480 1.0 .5 200* 2.2 1.4 157 Shell Creek 9580 2.7 1.9 142 2.3 1.6 144 Timber Creek 7950 .0 .0 * 1.0 1.4 71 ----- ----- Basin Index (%) 117* 118 SHOSHONE RIVER Blackwater 9780 4.7 1.5 313* 6.4 1.8 356 Evening Star 9200 3.6 1.1 327* 6.7 1.9 353 Marquette 8760 .3 -M * 1.6 -M * Sylvan Road 7120 .8 .0 * 5.8 1.4 414 Younts Peak 8350 -M .5 * -M 1.3 * ----- ----- Basin Index (%) 350* 371 POWDER RIVER Bear Trap Meadow 8200 .3 .2 150* 1.5 1.1 136 Cloud Peak Reservoir 9860 .3 1.0 30* 1.7 1.8 94 Grave Springs 8550 .5 .2 250* 1.6 1.5 107 Hansen Sawmill 8360 .0 .0 * .9 1.2 75 Middle Powder 7760 .0 .4 0* 1.3 1.6 81 Powder River Pass 9480 1.0 .5 200* 2.2 1.4 157 Soldier Park 8720 -M -M * 1.4 -M * ----- ----- Basin Index (%) 91* 107 TONGUE RIVER Big Goose 7990 .0 .5 0* .6 1.7 35 Bone Springs Div 9350 1.1 1.5 73* 2.0 1.7 118 Burgess Junction 7880 .0 .6 0* .9 1.6 56 Dome Lake 8880 .0 1.0 0* 1.3 1.8 72 Little Goose 8870 -M -M * 1.4 -M * Sucker Creek 8880 .0 .8 0* .8 1.8 44 Tie Creek 6870 .0 .0 * 1.0 1.9 53 ----- ----- Basin Index (%) 25* 63 BELLE FOURCHE Cole Canyon 5910 .0 .0 * .4 1.3 31 ----- ----- Basin Index (%) * 31 CHEYENNE RIVER BASIN Blind Park 6890 .0 .0 * 1.4 1.5 93 North Rapid Creek 6130 .0 .0 * .7 1.3 54 ----- ----- Basin Index (%) * 75 UPPER N. PLATTE Arapaho Ridge 10960 1.0 1.3 77* 2.0 1.8 111 Blackhall Mtn 9820 1.1 -M * 2.4 -M * Columbine 9160 .2 .0 * 2.6 1.7 153 Divide Peak 8880 1.1 .4 275* 1.1 2.0 55 Joe Wright 10120 .3 .8 38* 2.7 2.1 129 Laprele Creek 8375 .0 .0 * .0 1.2 0 Med Bow 10500 2.0 -M * 3.0 -M * North French Creek 10130 .9 1.0 90* 1.9 2.0 95 Never Summer 10280 .9 .9 100* 2.0 -M * Old Battle 10000 1.1 1.3 85* 1.4 2.5 56 Rawah 9020 .5 .0 * 1.9 1.3 146 Sage Creek Basin 7850 .2 .0 * .8 1.2 67 Sand Lake 10050 1.8 1.2 150* 1.5 1.9 79 South Brush Creek 8440 .4 .0 * .9 1.5 60 Tower 10500 1.5 1.5 100* 2.2 2.6 85 Webber Springs 9250 .5 .2 250* 2.1 1.9 111 Willow Creek Pass 9540 .2 .3 67* 1.3 1.1 118 Zirkel 9340 -M .0 * 2.8 2.5 112 ----- ----- Basin Index (%) 119* 92 SWEETWATER Deer Park 9700 1.2 .8 150* 2.6 1.7 153 Larsen Creek 9000 .9 .0 * 3.7 -M * South Pass 9040 .8 .1 800* 1.8 1.2 150 ----- ----- Basin Index (%) 322* 152 LOWER N. PLATTE Casper Mtn. 7900 .0 .1 0* .2 1.7 12 Laprele Creek 8375 .0 .0 * .0 1.2 0 Reno Hill 8400 -M .6 * -M 1.5 * Windy Peak 7900 .0 .0 * .3 1.1 27 ----- ----- Basin Index (%) 0* 12 LARAMIE RIVER Brooklyn Lake 10240 .5 .3 167* .5 1.4 36 Cinnabar Park 9574 .7 .3 233* 1.5 1.6 94 Crow Creek 8330 .0 .0 * .7 1.2 58 Deadman Hill 10220 1.2 1.0 120* 1.9 1.5 127 Rawah 9020 .5 .0 * 1.9 1.3 146 Roach 9700 .4 .3 133* 1.1 1.5 73 ----- ----- Basin Index (%) 174* 89 S. PLATTE Black Mountain 8920 .7 -M * 1.2 -M * Crow Creek 8330 .0 .0 * .7 1.2 58 Deadman Hill 10220 1.2 1.0 120* 1.9 1.5 127 ----- ----- Basin Index (%) 120* 96 LITTLE SNAKE RIVER Battle Mountain 7440 .3 .0 * 1.3 1.0 130 Divide Peak 8880 1.1 .4 275* 1.1 2.0 55 Elk River 8700 .4 .0 * 1.7 1.6 106 Little Snake River 8915 .8 .2 400* 2.7 2.5 108 Old Battle 10000 1.1 1.3 85* 1.4 2.5 56 Sage Creek Basin 7850 .2 .0 * .8 1.2 67 Sandstone RS 8150 .6 .0 * .6 1.2 50 Whiskey Park 8950 .4 .0 * 2.2 1.7 129 ----- ----- Basin Index (%) 258* 86 UPPER GREEN RIVER Big Sandy Opening 9080 1.7 .6 283* 3.8 1.1 345 Blind Bull Sum 8650 2.4 .4 600* 4.0 1.2 333 East Rim Divide 7930 .8 .0 * 2.9 .8 362 Elkhart Park G.S. 9400 1.4 .4 350* 3.6 1.1 327 Gros Ventre Summit 8750 .7 .8 88* 3.4 1.0 340 Gunsight Pass 9820 1.2 .4 300* 4.1 1.3 315 Kendall R.S. 7740 .6 .0 * 3.2 .8 400 Loomis Park 8240 .9 .0 * 3.8 1.0 380 New Fork Lake 8340 .8 .0 * 1.5 .8 188 Pocket Creek 9360 -M -M * -M -M * Snider Basin 8060 1.2 .0 * 3.9 .8 488 Spring Creek Divide 9000 2.5 .4 625* 5.3 1.2 442 Triple Peak 8500 2.1 .2 1050* 5.9 1.2 492 ----- ----- Basin Index (%) 509* 369 LOWER GREEN RIVER Blacks Fork Jct 8870 .2 -M * 1.2 -M * Buck Pasture 9700 .4 -M * 1.8 -M * EF Blacks Fork GS 9360 .5 -M * 1.6 -M * Hams Fork 7840 .7 .0 * 2.8 .7 400 Hewinta 9519 .2 .0 * 1.2 1.2 100 Hickerson Park 9145 .4 .0 * .9 1.0 90 Hole-in-Rock 9150 .1 .0 * 1.2 1.2 100 Indian Creek 9425 2.0 .7 286* 4.0 1.2 333 Kelley R.S. 8180 -M .0 * -M 1.0 * Spirit Lk 10235 .2 -M * 1.4 -M * Steel Creek Park 10200 .8 .6 133* 1.8 1.4 129 ----- ----- Basin Index (%) 323* 178 UPPER BEAR RIVER Bear River RS 8777 .1 -M * 1.1 -M * Bug Lake 7950 1.2 .0 * 3.0 1.3 231 Burts Miller Ranch 8000 .0 -M * .6 -M * Chalk Creek #1 8993 .7 .3 233* 2.0 1.8 111 Hayden Fork 9212 .5 .0 * 1.5 1.5 100 Kelley R.S. 8180 -M .0 * -M 1.0 * Lily Lake 9156 .3 .0 * 1.1 1.4 79 Monte Cristo 8960 2.1 .0 * 3.3 1.6 206 Salt River Summit 7760 1.3 .0 * 3.9 1.0 390 ----- ----- Basin Index (%) 2033* 172 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Normal Snow Water Equivalent and Total Precipitation values If the Basin Index (%) value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Median represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Average value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1981-2010. Provisional data, subject to revision. * Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median for the day is less than 10% of the maximum median value for the year. * Basin - More than half of the sites within the basin are flagged with *, preventing the calculation of a meaningful basin index. The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians (for snow water equivalent) or averages (for precipitation) and the resulting fraction multiplied by 100. ---------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Normal Snow Water Equivalent and Total Precipitation values If the Basin Index (%) value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Median represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Average value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1981-2010. Provisional data, subject to revision. * Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median for the day is less than 10% of the maximum median value for the year. * Basin - More than half of the sites within the basin are flagged with *, preventing the calculation of a meaningful basin index. The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians (for snow water equivalent) or averages (for precipitation) and the resulting fraction multiplied by 100.